binder: release 6092:6113 transaction 24 in, still active binder: send failed reply for transaction 24 to 6092:6113 ================================================================== BUG: KASAN: use-after-free in __list_del_entry+0x196/0x1d0 lib/list_debug.c:60 Read of size 8 at addr ffff8801d03ab910 by task kworker/0:1/25 CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 4.9.86-gb324a70 #50 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events binder_deferred_func ffff8801d951fa50 ffffffff81d956f9 ffffea000740eac0 ffff8801d03ab910 0000000000000000 ffff8801d03ab910 ffffed0039770999 ffff8801d951fa88 ffffffff8153e083 ffff8801d03ab910 0000000000000008 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] print_address_description+0x73/0x280 mm/kasan/report.c:252 [] kasan_report_error mm/kasan/report.c:351 [inline] [] kasan_report+0x275/0x360 mm/kasan/report.c:408 [] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429 [] __list_del_entry+0x196/0x1d0 lib/list_debug.c:60 [] list_del_init include/linux/list.h:145 [inline] [] binder_dequeue_work_head_ilocked drivers/android/binder.c:913 [inline] [] binder_dequeue_work_head drivers/android/binder.c:933 [inline] [] binder_release_work+0x8c/0x260 drivers/android/binder.c:4355 [] binder_thread_release+0x428/0x600 drivers/android/binder.c:4563 [] binder_deferred_release drivers/android/binder.c:5104 [inline] [] binder_deferred_func+0x43f/0xd10 drivers/android/binder.c:5176 [] process_one_work+0x7e0/0x1610 kernel/workqueue.c:2092 [] worker_thread+0xe0/0x10d0 kernel/workqueue.c:2226 [] kthread+0x26d/0x300 kernel/kthread.c:211 [] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:374 Allocated by task 6113: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 save_stack+0x43/0xd0 mm/kasan/kasan.c:505 set_track mm/kasan/kasan.c:517 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:609 kmem_cache_alloc_trace+0xfb/0x2a0 mm/slub.c:2742 kmalloc include/linux/slab.h:490 [inline] kzalloc include/linux/slab.h:636 [inline] binder_transaction+0x103c/0x7040 drivers/android/binder.c:3056 binder_thread_write+0x8d4/0x31f0 drivers/android/binder.c:3679 binder_ioctl_write_read.isra.55+0x1ed/0x9a0 drivers/android/binder.c:4618 binder_ioctl+0xaea/0x11b0 drivers/android/binder.c:4757 vfs_ioctl fs/ioctl.c:43 [inline] do_vfs_ioctl+0x1aa/0x1140 fs/ioctl.c:679 SYSC_ioctl fs/ioctl.c:694 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 do_syscall_64+0x1a4/0x490 arch/x86/entry/common.c:282 entry_SYSCALL_64_after_swapgs+0x5d/0xdb Freed by task 25: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 save_stack+0x43/0xd0 mm/kasan/kasan.c:505 set_track mm/kasan/kasan.c:517 [inline] kasan_slab_free+0x72/0xc0 mm/kasan/kasan.c:582 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kfree+0x103/0x300 mm/slub.c:3878 binder_free_transaction+0x6a/0x90 drivers/android/binder.c:2122 binder_send_failed_reply+0x185/0x3a0 drivers/android/binder.c:2155 binder_thread_release+0x416/0x600 drivers/android/binder.c:4562 binder_deferred_release drivers/android/binder.c:5104 [inline] binder_deferred_func+0x43f/0xd10 drivers/android/binder.c:5176 process_one_work+0x7e0/0x1610 kernel/workqueue.c:2092 worker_thread+0xe0/0x10d0 kernel/workqueue.c:2226 kthread+0x26d/0x300 kernel/kthread.c:211 ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:374 The buggy address belongs to the object at ffff8801d03ab900 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 16 bytes inside of 192-byte region [ffff8801d03ab900, ffff8801d03ab9c0) The buggy address belongs to the page: page:ffffea000740eac0 count:1 mapcount:0 mapping: (null) index:0x0 flags: 0x8000000000000080(slab) page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d03ab800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801d03ab880: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc >ffff8801d03ab900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801d03ab980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801d03aba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================